https://cmake.org/cmake/help/latest/command/add_subdirectory.htmlIf the EXCLUDE_FROM_ALL argument is provided then targets in the subdirectory will not be included in the ALL target of the parent directory by default, and will be excluded from IDE project files
https://cmake.org/cmake/help/latest/command/add_subdirectory.html
If the EXCLUDE_FROM_ALL argument is provided then targets in the subdirectory will not be included in the ALL target of the parent directory by default, and will be excluded from IDE project filesresolves: https://github.com/codereport/jsource/issues/199
Without
EXCLUDE_FROM_ALL, anytime we add a target that compiles to An-Algorithm-Library it would compile them when you compileALLin j.